Hammer-type mill and feeder



March 17, 1931. A. L. vl-:EDER A 1,797,107

HAMMER TYPE MILL AND FEEDER Filed Oct. 1'7, 192,9 4 Sheets-Sheet l a W fsa? a www March 17, 1931. A, L VEEDER 1,797,107

HAMMER TYPE MILL AND FEEDER Filed Oct. 17, 1929 4 Sheets-Sheet 2 Mal'ch17, 1931. A L VEEDER 1,797,107

HAMMER TYPE MILL AND FEEDER Filed ont. 17, 1929 4 'sheets-sheet 3 JZ.Feeder,

March 17, 1931. A. L. VEEDE 1,797,107

HAMMER TYPE MILL AND FEEDER Filed Oct. 17, 1929 4 Sheets-Sheet 4Patented Mar. 17, 1931 y UNITI-:D STATES PATENT OFFICE ALBERT' L.VEEDER,lor BoIsr-r,v IDAHo, AssIoNoD To vfa I.. MILL AND FEEDER con.-roDATIoN,-oF Borsa7 IDAHO, A` CORPORATION or' INDIANA HAMMER-Truman ANDDED'ED Application led october 17,4929. Serial No. 400,318.

Y This invention relates to 'a mill 4of the ham- ;ner type and to afeeder mechanism thereor. f It is aimed to provide .a novel'constructionwhich willhave greater'. capacity thanjexisting types and whichwilli`operate morevrapl idly and will better operate .inconnection with` hayand grain-jointly, orseparately.

A further object 'is to provide a novel construction whe'reini thehammers coact to form a'V-shaped-passage on thecylinders to lead thematerial to the center 'from each end of the cylinder in order to keep'the grain or lalay working toward the centerof the cyliner M .Aurthe'r'obj ectis to provide anovel construction fof mill which willhavea plurality rather than a single .cylinder, arranged in coactingrelation wheieb 'one prepares, the

material for the other an .;Willali'ordgreater capacity inthatthematerial will be finer when it enters the secondfcylinder and will leavethe same more' rapidly. Further it` is aimed to Iprovide novelautofmatically operating lutc mechanisinwherebythe feeding, is .controlledin.case of clog. gmg oryslowlng down of lopration of the workingparts.y fVarious additional objects and advantages will becomeap arentfromaconsideration `of jthe descriptmn 'following taken in-con. Anectionwith .accompanyin drawings .illustrating an Aoperative emboiment.V.Insa'id drawingst-- Figure 1.1 is a vlew-,in'side elevation lof the imroved. feederad mill, y, r

- gure 2 is a verticalcentral sectional view thrcfigh the feeder,

Fi re 3 is a detail sectional' view taken on f the line 3-3 of, Figure6, l Figure 4 is a view partly in elevatlon Vand partly in section,illustrating the.4 clutch mechanism of Figure connection with adjacentstructure,

. line 5-5 c- Figure 6, Figure 6 is aplan view of-the improved lfeederand mill,.;` f x Figure 7 is: s central vertical sectional 5c viewthrough the mill, and, i

Figure 5 a sectlonal view'taken on the Fi e 8 is a cross sectionalviewtaken on the l1ne88 of'Figure '2'.l

Referring specifically to the drawings, the parts const1tuting thelnvention may be sup-- ported upona base or latform as at 10 andessentially com riset e `hammer type mill as at A and a eeder mechanismas at B. p Referrin Aspecicall to the hammer mill Afan as detaile -inFigures 7 an 8, the same comprises a vertically disposed casngllhavingmeans 'therein to cut hay or the likefed by the'feeder mechanism B. .Inaddition, grain may also be suppliedinto the casing ll'as throughsJhopper 13 arranged in communication with a chute 14 on the casingA11,a-slidableand adjustable valve or bottom 15 being provided for thehopper to control the supply of the grain into the mill. By reason ofthe present construction, bothl Agrain and; hay may be supplied to themlll attl 1e same time, thus forming a. mixture, or if desiredeithergrain or hay alone ma be supplied'fto the mill.

withili the.mill are upper and peratin lower vcylin `ers -16 andl 17which may compriseendhdisks 18 and 19, respectively, keyed to'shafts20and 21, respectively, which are journaled in suitable bearings in thewalls of the casing 11., Rods 22 and 23 connect the plates or disks 18and `19 tog ther and loosely mounted on each rod are a pelurality of.hammers. 24. l The hammers 24 each preferably consist of three armsor-hammer heads 25, at the junctionof which-a triangular slot or opening26 isn provided. Such openings 26 enable the hammers, to be strung andloosely mountedon the rods 22'in view of the fact that the openings 26are relatively large with respect to the rods. The hammers thus havefree movement on the rods and dilerent heads alternately come into playand thus aord longer'life for thehammers.. It will be noted also thatthe heads 25 are disposed atan les to each other, thus forming between ajacent pairs, substantially V-shaped passagesl through which the grainand hay or'either must pass and which serve to Adirect thesamevfectively: distribute it. Suitably fastened' within casing 1 1 areforaaninous` concave tothe center of the cylinders 'andmore ef-"xfscreens 27 and 28, that at 27 for the upper cylindervbeing of largermesh than that at 28. The hammers 24 serve to engage the hay and grainor either adjacent the concaves 27 and 28, milling the same and causingit to pass first through the concave 27 and thenthrough the concave 28.The concave 27 is larger than the concave 28, and the milling is morerapidly accomplished.

A bottom 29 is provided in the casing 11 having a central trough 30 inwhich an auger, screw or conveyor-31 is rotatably mounted, the samehaving a shaft 32 j ournaled in suitable bearings .in the walls of thecasing 11.

In order to operate the mill, a pulley 33 is provided on the shaft 2Oand thereover a belt 34 may be trained,which is driven from any suitablesource of power. Pulleys 35 and -36 are keyed to the shafts 20 and 21,respectively, and a twisted belt 37 is trained thereover whereby thecylinders are operated in op osite directions.

other pulley 38 is keyed to the -shaft 21 and is traversed by a belt 39which also traverses a pulley 40 keyed to the shaft 32, whereby theconveyor 31 is operated. This conveyor 31 feeds the milled material tothe side'of the mill to be discharged into wagons, or any other means orlocation of disposition for the milled material. It will be noted thatthe auger 31 is also eguipped with fan blades 33 whereby thedevice willalso serve as a fan or blowerto assist in discharging the milledmaterial.

It should also be mentioned that the lower cylinder is rotated fasterthan the upper cylinder for instance at a speed of two thousandrevolutions per minute as compared with fteen hundred revolutions perminute in order to receive the ground material from the upper cylinderas fast as it is produced. In using the two cylinders and concaves, thema terial is milled in stages, that is it is discharged through theconcave 27 coarser than would be the' case if it discharged through buta single concave. When it does discharge through the concave 27 it isrelatively fine and is further milled and passed 'n a finer conditionthrough the concave 28, the mill accordingly having greater capacity andybeing capable offaster and more efficient operation.V

Reverting to the feeder mechanism B, the

same comprises a frame essentially having side boards suitably connectedtogether as by bars 46,'and connected also to the casing 11 adjacent theopening12. Suitably journaled in appropriate bearings on the walls 45are shafts 47 which have sprocket wheels 48 keyed thereto andwhich arein engagement with sprocket chains 49 constituting partv of a raddle orendless conveyor generally designated 50 and which may be of anyappropriate or conventional form. Operation of the raddle feeds haywhich is supplied vthereto in the direction of the opening 12 walls 45and extendin Adjacent such opening 12 and journaled in the walls 45 is acutter-operating shaft 51 provided with a plurality of cranks 52 whichare equi-distantly spaced about the axis thereof.

J ournaled and suspended on each crank 52 is a cutter member53, bearings54 being bolted thereto as shown and overlapping the crank. Cuttermembers 53 may have depending toothed portions 55 vthereon which aresuitably sharpened and adapted to engage the hay, which is disposedtransversely of the raddle 50, as the same advances and feeds the haytoward the/opening 12. Cranks 56 extend rigidly from the cutter members53 and have rpitmen 57 pivoted thereto at 58 and pivoted at 59 to thesides 45. In addition, feeder bars 60 are pivoted at 61 to the cuttermembers 55 and at 62 to links 63 carried by floating or verticallyslidable blocks 66 guided in suitable -frames 67 and normally held inlowermost position by expansive coil springs 68, whose tension isregulated through the adjustment of screws 69 appropriately mounted.

At the lower ends, the blocks 66 have a shaft 70 journaled therein andwhich extends outwardly through vertically elongated slots 71 providedin the walls 45. Keyed to the shaft 70 isa feed roll 72 for the haywhich is arranged directly above a coacting feed roll for the hay whichis designated 73 and keyed to a shaft 74 appropriately journaled in theto the outside thereof' As best shown in Flgures 5 and 6, shaft 51 isprovided with a drive pulley 75 which is driven from a pulley 76 on theshaft 20 through the medium of a twistedr belt 77. Such pulley. isarranged on one side of the feeder mechanism B. On the opposite side ofsuch feedermecha-nism, a sprocket wheel 78 is keyed .to shaft 51 andtraversed by a sprocket chainv 79 which also traverses a sprocket wheel80 keyed to a shaft 81 suitably journaled on one of the walls 45 andwhich has a gear wheel 82 keyed thereto. Asprocketv wheel 83 is alsokeyed to shaft 81`and is traversed by asprocket chain y84 also trai itsother end which spring is fastened tothe sc lever 86 and the adjacentside 45.

The gear wheel 82 is in mesh with a` gear wheel 90keyed on'a shaft 91appropriately lmounted andjournaled on one of the sides` 45 and whichhas a sprocket wheel 92 keyed thereto which is traversed by a sprocketchain -93, also traversing a -sprocket wheel 94 rigidwith gear wheel 90and thus loose on shaft 93. A sprocket wheel 96 is also keyed to theshaft 95 and has a sprocket chain 97 travers- 'ing the same and alsotraversing a sprocket `should clog between the feed rollers 72 and 73 orif the speed of rotation of such rollers should diminish for any reason.To this end, the gear 90 is loose on one of the sleeves of shaft 91 butnormally clutched therewith through the engagement of a spring-urgedpawl 96 carried by a disk 97 on the sleeve of shaft 91 opposite to that"carrying the gear wheel 90. vNormally the pawl 96 engages one of aplurality of projections .98 on the gear wheel 90, thereb maintainingthe sleeves of shaft 91 connecte together.

A governor mechanism 99 is driven from the shaft 51 to control theengagement of the` pawl 96 and projection 98. This governor comprises alshaft 100 having a worm 101 thereon keyed to a worm wheel 102 keyed onsaid shaft 51. A conventional governor device 102 is carried by shaft100 so that centrifugal motion will cause a sleeve thereof 103 to movevertically onvthe shaft 100 and accordingly vary the position of or rockan arm 104 carried thereby and resting on a portion of the feedermechanism- B and adapted at times to move at its free end 105 intoaposition where it engages or intercepts rotation of the pawl 96',moving it out of env gagement with the adjacent pin 98, thus un lsrscoupling the sleeves of the shaft 91 whereby operation ofthe raddle 50will cease since shaft 9" will not be driven. As a result, it will beseen that when the speed of the feed rolls diminishes for any reason,the clutch controlling its drive is automatically thrown out ofoperation and which clutch will automatically be thrown back intooperation upon the parts acquiring their normal speed.

Another governor mechanism is provided whereby if undue resistance isoffered to cutting on the part of the knives 55, their drive will beautomatically thrown out. An automatic clutch. also controls thisoperation. To this end,the pulley 75 has a plurality of'governor arms110 pivoted thereto at 111, each arm carrying a weight 112 which isadjustable along the arms. In addition, a link 113 is fastened at 114 toeach arm 110 andis connected to a contractile spring 115 anchored at 116to the pulley 75. Thus the springs 115 'resist centrifugal action of thearms 110 incidental to rotation of the pulley 75.A The pulley also has aclutch section 117 disposed on the shaft 51, such clutch section'andpulley 75 forming aunit which is loosely mounted on the shaft 51. Aloose-intermedi ate'clutch section 118 is also disposed on the shaft51.; and it is adapted to-engage a clutch head 118a lixed on/shaft 51'.The arms or' links 113 by means 'of pins 119`are connectedg so that thecentrifugal action of wheel 75 will .control engagement of the clutchsection 117, 1'1'8 and 118, the clutch mechanism being of mately andfrictionally contact with the clutch section 118HL thus clutching thedriving wheel 75 with the shaft 51 and causing the latter to operate.Should the motion of the driving member 75 diminish, the governor arms110 will move toward the shaft and the reverse action to that tracedwill takeplace,

thus disposing the parts in loose relation without sufficient frictionbetween clutch sections 118 and 118,a to drive the latter andaccordingly shaft 51.

It will be seen that the two governors employed act independently ofeach other. The reason for such a construction is to enable gradualcleaning out of hay from the feeder. For instance, the cutter knives andfeed rakes start first, which takes the hay from the top of the supplyon the raddle before it enters opening 12, and then the raddle and lowerfeed roll will start when the cylinder speed becomes normal.

In order that access may be had to the various parts of the mill, forinspection, repair or the like, a vdoor 120 is provided adjacent the topthereof being hinged at 121. Likewise a door 122 is pivoted to suchcasing at v adjustment of the feed bars 60. Such feed bars 60 arepreferably toothed as shown at 125.

' Various changes may be resorted to pro?I vided they fall within thespirit and scope o the invention.

I claim as my invention los 1. A feeder mechanism of the class de- Yfeed roll and feed bar will simultaneously be adjusted.

2. A feeder of the class described comprising a crank shaft, cuttermembers carried by the cranks of said shaft, links pivotally connectedto the cutter members and to a fixed part, feed bars pivoted to thecutter members, links to which the feed bars are connected, slidableblocks to which the second mentioned links are connected, a feed rollercarried by the blocks, a material feed meniber beneath the cuttermembers and bars, and a feed roller coacting with the first mentionedfeed roller.

3. A machine of the class described having; feed rollers, feeding meansto move material thereto, and clutch means operable automatically tocease operation of the feeding means upon a decrease in speed ofoperation of the feed rollers.

4. A machine of the class .described having rst and second feedingmeans, and clutch means having a centrifugally operable part to causeautomatic cessatlon of operation of 25 the first feeding means when thesecond feeding means operates slow.

In testimony whereof I aiix my signature.

ALBERT L. VEEDER.

